Experimental study of sizes and velocities of the droplets produced by water injection system with compressed-air atomizer into the intake manifold of an internal combustion engine applying the optic methods

The paper studies the quality of water spraying by system with a compressed-air atomizer designed for water injection into the intake manifold of an internal combustion engine. The system consists of a two-cylinder piston compressor providing compression of water-air mixture in the working chambers....

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Bibliographic Details
Published in:Thermophysics and aeromechanics 2023-09, Vol.30 (6), p.1111-1121
Main Authors: Garipov, M. D., Khafizov, A. G., Zinnatullin, R. F., Melkov, A. A., Shayakhmetov, V. A., Gobyzov, O. A.
Format: Article
Language:English
Subjects:
Atomizing
Compressed air
Diameters
Droplets
Image processing
Intake manifolds
Internal combustion engines
Physics
Physics and Astronomy
Sauter mean diameter
Spraying
Thermodynamics
Velocity distribution
Water injection
Water masses
Water quality
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Summary:The paper studies the quality of water spraying by system with a compressed-air atomizer designed for water injection into the intake manifold of an internal combustion engine. The system consists of a two-cylinder piston compressor providing compression of water-air mixture in the working chambers. The piston compressor has connection to the atomizer through long channels. The droplet sizes were measured through automatic image processing by the Shadow Photography method. The droplet velocity field was measured by 2D-PIV method. Experimental results demonstrated that the injection system offers a high quality of atomization for the air/water mass ratio higher than 0.46. The Sauter mean diameter was no more than 31.1 µm.
ISSN:1531-8699
0869-8643
1531-8699
DOI:10.1134/S0869864323060136